Eli5: How are phones waterproof even though the charging port terminals can be exposed to water and not short circuit them?
In: 4320
They put a nano coating of this tiny hydrophobic liquid around the seems and port of the phones. This makes it so water dosen’t want to touch the phone in the first place and can’t “stick” to it so to speak.
This nano coating is basically just a type of glue. Most brand new phones can survive hours submerged underwater because the seals around the phone haven’t been abused yet. The older your phone the more time it’s been dropped, had the hot and cold thermally expand and shrink the phone’s materials breaking the bond of the seams.
Swimming with your phone can put enough stress onto the material and force water into your phone. Kinda like pressurizing the water into the phone in a way. The deeper the phone goes in a pool (hypothetically) the less chance of that phone surviving due to the increase of pressure. (I’m sure you’ve had your ears build up pressure when you dive into a deep pool, same idea as that).
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